Cant install any apps even after hard restart

Guys, please help. Tried everything. No other ideas. I can not install a single app or update from the play market. It give me the same error no matter what I try. I've deleted my google account and added it back, ive used a different brand new account. Ive done multiple factory resets. It gives me the same error and not letting me install a single app. Please suggest something else? I still love my GoogleTV.